| 摘要 |
A castor assembly includes a support unit, a frame unit, a brake unit, and an operation unit. The frame unit includes a frame, a locating flange, and a wheel. The support unit includes a bearing, and an inner bushing. The brake unit includes a control shaft, a braking block, a lower toothed disk, an upper toothed disk, a locking block, and an elastic member. The operation unit includes a housing, a drive seat, a pressing roll, a cam block, and a restoring member. Thus, when the braking block presses the wheel to stop movement of the wheel, the upper toothed disk meshes with the lower toothed disk to lock the lower toothed disk and the braking block so that the wheel is locked and cannot be turned freely when the wheel is braked. |
